Id like to display a:

'Welcome back (customer first name)'

message in the header on all pages when a customer is logged in. Im nearly there apart from the fact that the message only displays on the main page and defaults to:

'TEXT_GREETING_PERSONAL'

on all other pages'

This is the piece of code im using:

<?php if (SHOW_CUSTOMER_GREETING == 1) { ?>
<h2 class="greeting"><?php echo zen_customer_greeting(); ?></h2>
<?php
} else {
if (SHOW_CUSTOMER_GREETING == 0) {
?>

<?php } } ?>

any ideas on how to get this to display on all pages ?